I used Siltech MXT Pro New Yorker series with some Conrad Johnson gear. Probably more entry level compared to what most use around hear. In general I noticed Siltech projects a larger sound stage than those compred to. Bass was good. Nothing in the sound over emphasized. I enjoyed it and thought they were overachievers.
I would encourage purchase with return option. The dealer gave me a good deal on a higher level Siltech speaker cable, I already had the New Yorker interconnects. The higher level had good mids and highs but not much bass. Maybe some type of impedance mismatch or something. Not at all like same as I had but better, more like what is this. I sent them back and bought the matching New Yorker which sounded like it was meant to be there..
Have you ever looked at the Clarus Crimson? I suspect it maybe a good match with Maggies. Good bass, darker background and sparkle to the top end, not in a fatiguing way, smooth and present.
I don't know if Siltech still does this I loved how you could unscrew the terminal and just switch from banana to spade or vice versa.